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12122101 = 412711091
BaseRepresentation
bin101110001111…
…011111110101
3211210212101201
4232033133311
511100401401
61111452501
7205015255
oct56173765
924725351
1012122101
11692a572
124087131
132685754
141877965
1510e6b01
hexb8f7f5

12122101 has 8 divisors (see below), whose sum is σ = 12475008. Its totient is φ = 11772000.

The previous prime is 12122093. The next prime is 12122111. The reversal of 12122101 is 10122121.

Adding to 12122101 its reverse (10122121), we get a palindrome (22244222).

It can be divided in two parts, 121 and 22101, that added together give a palindrome (22222).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12122101 - 23 = 12122093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10566 + ... + 11656.

It is an arithmetic number, because the mean of its divisors is an integer number (1559376).

Almost surely, 212122101 is an apocalyptic number.

It is an amenable number.

12122101 is a deficient number, since it is larger than the sum of its proper divisors (352907).

12122101 is a wasteful number, since it uses less digits than its factorization.

12122101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 12122101 is about 3481.6807722708. The cubic root of 12122101 is about 229.7167338205.

The spelling of 12122101 in words is "twelve million, one hundred twenty-two thousand, one hundred one".

Divisors: 1 41 271 1091 11111 44731 295661 12122101